Question: Which continent of South Pole , that have extreme point lowest in Bentley Subglacial Trench?
Paraphrase: Which landmass of South Post , that have extraordinary point most reduced in Bentley Subglacial Trench?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q933 wdt:P30 ?answer . ?answer wdt:P1589 wd:Q818322}
Answer: Antarctica